You may have yourself convinced of your superior holiness, and you may even have a few other Kool-aid drinkers fooled as well, but I'm not buying into it and I'm dead certain that the Jedi Mind Trick isn't going to work on God either.
Mother Teresa's book and lack of faith have nothing to do with my faith or "holiness," although I realize it is the pattern of RC apologists to personalize these discussions. But they should resist the urge. It's not the topic.
The topic is Mother Teresa's 50-year loss of faith whcich goes a long way in explaining why she could so easily ignore the Gospel and instead preach the benefits of Hinduism, Buddhism and assorted other pagan beliefs.
When a person discards the truth, all lies look more appealing.
But the fearful, and unbelieving, and the abominable, and murderers, and whoremongers, and sorcerers, and idolaters, and all liars, shall have their part in the lake which burneth with fire and brimstone: which is the second death." -- Rev. 21:7-8"He that overcometh shall inherit all things; and I will be his God, and he shall be my son.
Did you get the order of those offenses? Before murderers and sorcerers, "the fearful and unbelieving" top the list of those whose end is not good.